Madison International acquired the 48.95 percent non-controlling interest in a 55,565-square-foot retail condominium at 510 Avenue of the Americas, brokerage Prince Realty Advisors announced. David E. Ash, principal and founder of Prince Realty, negotiated the deal for both sides. The sale price, at the mixed-use building between 13th and 14th Streets, was just under $68 million.

“I have a long working relationship with President John Yoon and ARK Partners,” Mr. Ash said in a statement. “So when this opportunity came up, I knew Madison was the right fit, and the first and only call I needed to make.” The deal closed February 12.